Home / 31,449.47-43,400.59-18,020.43

Finding the Fourth Proportional to 31,449.47, 43,400.59 and 18,020.43

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Solution

The fourth proportional to 31,449.47, 43,400.59 and 18,020.43 is: 24,868.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,449.47 : 43,400.59 = 18,020.43 : x
  2. Step 2: Convert to fraction form
    31,449.47/43,400.59 = 18,020.43/x
  3. Step 3: Cross multiply
    31,449.47x = 43,400.59 × 18,020.43
  4. Step 4: Simplify right side
    31,449.47x = 782,097,249.00
  5. Step 5: Solve for x
    x = 782,097,249.00/31,449.47
  6. Step 6: Final answer
    x = 24,868.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.